Cedar Waxwings Unmasked

Who are these masked birds?
Not Robin Hoods,
for they live in
the open woods.
They only deal
in stolen goods
like berry futures,
cedar cones,
and sweet, sweet, fruit
(but leave the stones).
Insects they catch
on the fly
when swarms of them
go buzzing by.
No need to worry,
moan. or fret.
Your valuables
they will
not
get.